I just finished upgrading my YP-U1 to the Korean firmware v3.150. Now the U1 supports SRS-WOW sound enhancements, which all other international versions of the firmware don't do (due to license-issues, I assume).

Why should only Koreans get the good sounding U1?

Believe me, the U1 now sounds about 300% better than before. It had a neutral, flat sound, and the EQ didn't help anything either - the perfect player for "audiophiles". But since I'm no "audiophile", and I want my player sounding the way I want, so it's fun for listening - SRS-WOW is a godsend! Now the player has real bass, excellent treble and crossfeed (sort of) - it sounds much more engaging and natural with all my phones.

I stumbled on this firmware by accident - I browsed the international Samsung website for updates for the U1, but somehow I landed on the Korean site and saw the letters "SRS-WOW" in between all the unintelligible Korean letters... so my thought were "WTF??? ZOMG!!!" - why did noone tell me that my U1 can sound GOOD?

Since the Korean version of the firmware is only available for users registered on the Korean Samsung site (what nonsense!) and I couldn't manage to register myself with the Korean instructions - I hacked my way into the download site and managed to get the firmware here: Samsung YP-U1 v3.150 Korean + SRS-WOW - enjoy! I know, I do... a lot more than before!

It's still not close to iAudio sound quality, but it's lightyears ahead of the standard European/US firmwares.

I was never quite happy with the sound of my YP-U1; it did the job but it now sounds better than ever, and I'm using it a lot more because of that. I found this post searching for portable devices with SRS features - lo and behold I already own one - it just needed a tweak!

That is weird. Your YP-U1 is MSC mode, right? I don't think there were MTP firmwares ever made for the YP-U1.

Reboot your computer, that might help. Also, plug the YP-U1 directly in one of your computer's USB ports on the backside - not in a hub, and not in a port on the front. Otherwise, use another computer.

When I plug in the player while holding down the Play button and pushing the reset button, the device manager does register the player as a 'Player Recovery Device Class' device. However, everytime I start up the YP-U1 Updater it complains that it cannot find any devices that are in Recovery Mode, and that it will show me what that means. Then it opens a help page in a web-browser going through the steps that I just did...

It will not let me update the firmware as it always claims the MP3 player is not in recovery mode. I've tried this out on two computers with the same results. Am I doing something wrong? I would really like to have the SRS-WOW feature for this player.

I registered just to say thank you, this firmware gave second life to my yp-u1vr (btw: i bought mine in Poland, and didn't have any problems with upgrade,it went smoothSo to the author of this thread: whenever you're in Poland be sure to contact me,i'll byu you a keg of finest polish beer Thanks again!

Didn't know that polish language is so popularI wrote before that i upgraded firmware, well actually i downgraded it because i had 3.152 (downloaded from samsungs' polish site)Now the player is louder and bass is really kickin' and i have to re-listen every song that i haveOh, i almost forgot :viel gesundheit! (I dont know how to say cheers:P)

I had exactly the same problems upgrading my YP-U1 as you did, but after a week of googling I stumbled across some intermediate driver versions that are needed before you can go straight to the 3.150 version.

DFKT - could you update the overall firmware sticky with links to the YP-U1 v2.1 and v3.12 drivers from my linked post?